Extension ringing console apparatus for telephone sets



FIG. 1 is a front, top and right side perspective view of an extension ringing console for telephone sets;

FIGS. 2 and 3 are respectively front and rear elevational views thereof;

FIGS. 4 and 5 are left and right side elevational views thereof; and,

FIGS. 6 and 7 are respectively top and bottom plan views thereof. 

The ornamental design for an extension ringing console apparatus for telephone sets, as shown and described. 